JP4556136B2 - Fall prevention tool and its use, and fall prevention fence and its use - Google Patents

Description

  The present invention relates to a fall-preventing tool that can prevent an operator from falling from a load loaded on a loading platform of a truck, a method for using the same, a fall-preventing fence, and a method for using the same.

  As is well known, waste wood generated in the demolition work of detached houses, etc., is a waste that has been specially designated as specific construction materials by the Construction Recycling Law enforced in May 2002. Cargo vehicles are often prepared separately from other waste. When loading waste wood onto a lorry, it is common for an operator to rearrange the waste timber so that it can be loaded more after the waste timber is temporarily placed on the cargo carrier's loading platform by a heavy machine. . This rearrangement work is a high-place work performed on waste wood that is gradually piled up, but at present the safety measures against falling of workers are not taken.

Therefore, in order to prevent the operator from falling from the load of the lorry, the support pillars respectively disposed on the front and rear parts or both side parts of the cargo bed, and the length detachably attached to the support pillars. An adjustable strut, a horizontal member that connects the upper portions of the struts and extends horizontally above the loading platform, and a first locking portion that is detachably and relatively displaceably locked to the horizontal member. And a second locking portion that is removably locked to a safety device attached to the body of the worker, and follows the movement of the worker by the guide of the horizontal member, or the vehicle length direction of the lorry or the vehicle A fall prevention device (see, for example, Patent Document 1) having a suspension device that moves in the width direction has been proposed.
JP 2003-93531 A (Claim 1, FIG. 1, etc.)

  However, in the fall prevention device as described above, it is necessary to fix the column support in advance to the body of the lorry or the loading platform by welding or the like. There is a risk that it will not pass) and the manufacturing cost of the truck will be high.

  In addition, since raising and lowering between the ground and the load is performed by placing a foot on the body of the truck or the load, there is a problem that an operator may fall during the raising and lowering.

  The present invention has been made in view of the circumstances and problems as described above, and there is no risk of illegal acts, and the cost can be reduced, and the fall prevention that can prevent the worker from falling during raising and lowering. It aims at providing a tool and its usage, a fall prevention fence, and its usage.

In order to achieve the above object, the fall prevention device according to claim 1 is provided with a fixing member whose one side is detachably fixed to the outer side of the pallet part of the lorry and a longitudinal direction is the vertical direction on the other side of the fixing member. And a plurality of legrests projecting so as to be perpendicular to the longitudinal direction of the support column and spaced apart from each other in the vertical direction on the left and right sides of the support column. And a retractable lifeline detachably attached to the elevating member , wherein the fixing member includes a main body portion made of a rectangular flat plate, a left end of the upper edge of the main body portion, and The cross-sectional shape provided so as to protrude perpendicularly from the right end to one side is provided so as to protrude downward from the left end and the right end of the lower edge of the main body portion, and extends vertically. The insertion hole is a long hole Two protruding portions, a screw portion that protrudes in a direction parallel to the longitudinal direction of the tip portion of the base portion having a trapezoidal plate shape, and is inserted into the insertion hole of the protrusion portion, and the base portion A hook bolt provided with a hook portion protruding perpendicularly to the surface direction on the head opposite to the tip portion, and a wing nut screwed into a screw portion protruding from the insertion hole of the protrusion portion of the hook bolt And a clamp that removably fixes the column of the elevating member provided on the other side of the center of the upper edge of the main body .

Fall prevention device of claim 2, the two fixing members in which one side on the outside of the swinging unit of the cargo bed of the truck is detachably fixed to each other in the vertical direction between opposing two posts and two posts A ladder having a large number of horizontal rails installed at intervals, and at least one column is detachably fixed to the other side of each of the fixing members so that the longitudinal direction is the vertical direction; A removably attached lifeline, and the fixing member protrudes in a right-angle direction from the left end and the right end of the upper edge of the main body portion to one side. 2 is provided with an L-shaped hook portion and an insertion hole, which is a long hole extending vertically, provided to protrude downward from the left and right ends of the lower edge of the main body portion. From two protrusions and a trapezoidal plate A screw portion that protrudes in a direction parallel to the longitudinal direction of the distal end portion of the base portion and is inserted into the insertion hole of the protruding portion; and a head portion on the opposite side of the distal end portion of the base portion with respect to the surface direction thereof. Provided on the other side of the center of the upper edge of the main body portion, a hook bolt having a hook portion protruding at a right angle, a wing nut screwed into a screw portion protruding from an insertion hole of the protrusion portion of the hook bolt And a clamp for detachably fixing the ladder column .

  The method for using the fall prevention tool according to claim 3 uses the fall prevention tool according to claim 1 or 2 for preventing an operator from falling from the load loaded on the loading platform of the truck. In this method, one side of the fixing member is detachably fixed to the outer side of the tilting portion of the loading platform, and the column is detachably attached to the other side of the fixing member so that the longitudinal direction thereof is the vertical direction. In a fixed state, the tip of the retractable lifeline is removably locked to an operator on the load.

Also, fall prevention fence according to claim 4, the two fixing members, each one side on the outside of the swinging unit of the cargo bed of the truck is detachably fixed, a longitudinal other side of one of said fixed member A plurality of struts that are detachably fixed so as to be in the vertical direction, and a plurality of protrusions that are perpendicular to the longitudinal direction of the struts on the left and right sides of the struts and spaced apart from each other in the vertical direction. a lifting member having a leg rest portion, and the strut member in the longitudinal direction is detachably fixed so as to be vertically on the other side of the other of the fixing member, at least one which is laid on at least the struts and the strut member Two handrails, the lifting member, the support member, or a retractable lifeline that is detachably attached to the handrail, and the fixing member is a main body made of a rectangular flat plate, and Left of upper edge And a cross-sectional shape provided so as to protrude perpendicularly from the right end to one side is provided so as to protrude downward from the left end and the right end of the lower edge of the main body portion, and vertically. Two projecting portions provided with insertion holes that are elongated holes and a distal end portion of a base portion formed of a trapezoidal plate shape project in a direction parallel to the longitudinal direction and are inserted into the insertion holes of the projecting portions. A hook bolt provided with a screw portion and a hook portion protruding perpendicularly to the surface direction on the head opposite to the tip portion of the base portion, and a screw protruding from an insertion hole of the protrusion portion of the hook bolt A wing nut that is screwed into the portion, and a support column of the lifting member provided on the other side of the center of the upper edge of the main body unit and a clamp that removably fixes the support member. .

The fall-preventing fence according to claim 5 includes three fixing members, one of which is detachably fixed to the outer side of the pallet of the cargo truck, two opposing struts, and a vertical direction between the two struts. A ladder in which a plurality of horizontal rails are installed at intervals to each other, and one column is detachably fixed to the other side of each of the two fixing members so that the longitudinal direction is the vertical direction; a strut member which longitudinal direction is detachably fixed so as to be vertically on the other side of the other of said stationary member, and at least one handrail is bridged at least said post and said post member, said ladder, the strut A roll-type lifeline that is detachably attached to a member or the handrail, and the fixing member is a main body made of a rectangular flat plate, and the left and right ends of the upper edge of the main body from the left side to the one side To protrude in a right angle direction The hook section having an L-shaped cross section and two insertion holes that are provided so as to protrude downward from the left end and the right end of the lower edge of the main body section and are elongated holes extending vertically A protruding portion, a screw portion that protrudes in a direction parallel to the longitudinal direction of the tip portion of the base portion formed of a trapezoidal plate shape, and is inserted into the insertion hole of the protruding portion, and a side opposite to the tip portion of the base portion A hook bolt having a hook portion projecting at right angles to the surface direction of the head, a wing nut screwed into a screw portion projecting from an insertion hole of the projecting portion of the hook bolt, and the main body portion And a clamp for removably fixing the support column of the ladder and the support column member provided on the other side of the center of the upper edge of the ladder .

  The method of using the fall prevention fence according to claim 6 uses the fall prevention fence according to claim 4 or 5 to prevent an operator from falling from the load loaded on the loading platform of the truck. In this method, one side of the fixing member is detachably fixed to the outside of the tilting portion of the loading platform, and the column is detachably attached to the other side of one of the fixing members so that the longitudinal direction thereof is the vertical direction. In the state where the column member is detachably fixed to the other side of the other fixing member so that the longitudinal direction thereof is vertical, the tip of the retractable lifeline is operated on the load. It is detachably locked to the person.

  According to the first to third aspects of the present invention, since it can be detachably attached to the lift part of the loading platform of the lorry and there is no need to modify the lorry, there is no risk of illegal acts and cost reduction is achieved. be able to. Further, since the worker can move up and down using the lifting member or the ladder, it is possible to prevent the worker from falling during the lifting and lowering.

  According to the fourth to sixth aspects of the present invention, since the handrail is installed, it is possible to prevent the operator from falling by the handrail in addition to the above effects.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The fall prevention tool 1 which concerns on 1st Embodiment is provided with the fixing member 2, the raising / lowering member 3, and the roll-up type lifeline 4 as shown in FIGS.

  As shown in FIG. 3, one side 2 a of the fixing member 2 is detachably fixed to the outside of the tilt portion 7 of the loading platform 6 of the truck 5. Examples of the freight car 5 having the lift part 7 in the loading platform 6 include a dump truck and a truck. The fixing member 2 can be fixed not only to the left side tilt portion 7 of the lorry 5 but also to the right side tilt portion 8 as shown in FIG. 2 or the rear side tilt portion 9 as shown in FIG.

  The fixing member 2 is made of a steel material or the like. As shown in FIGS. 3 to 5, the main body portion 11, the two hook portions 12, the two projecting portions 13, the two hook bolts 14, and the two wing nuts. 15 and a clamp 16.

  As shown in FIGS. 4 and 5, the main body 11 is formed in a rectangular plate shape. As shown in FIGS. 3 and 5, the hook portion 12 is formed in an L shape, and protrudes perpendicularly to the one side 2 a of the fixing member 2 at the left end and the right end of the upper edge of the main body portion 11. Is provided. As shown in FIGS. 3 and 4, the protruding portion 13 is formed in a rectangular plate shape, and is provided to protrude downward at the left end and the right end of the lower edge of the main body portion 11.

  As shown in FIGS. 7 and 8, the hook bolt 14 includes a base portion 21, a screw portion 22, and a hook portion 23.

  The base 21 is formed in a trapezoidal plate shape. The screw portion 22 is provided at the distal end portion of the base portion 21 so as to protrude in a direction parallel to the longitudinal direction of the base portion 21. The hook portion 23 is formed in an L shape, and is provided on the head of the base portion 21 so as to protrude in a direction perpendicular to the surface direction of the base portion 21.

  As shown in FIGS. 3 and 5, the two hook portions 12 of the fixing member 2 are hooked so that the fixing member 2 is located on the outer edge of the upper portion 7 of the upper portion 7 of the loading platform 6. As shown in FIGS. 2 and 3, a hook portion 31 having an L-shaped cross section is provided on the outer edge of the loading platform 6 so as to protrude downward. The hook portion 23 of the hook bolt 14 is hooked on the hook portion 31 of the loading platform 6.

  As shown in FIG. 4, an insertion hole 32 is provided in the protruding portion 13 of the fixing member 2. The threaded portion 22 of the hook bolt 14 is inserted from the one side 2 a of the fixing member 2 into the insertion hole 32 of the protruding portion 13. As shown in FIGS. 3 to 5, the wing nut 15 is screwed into the threaded portion 22 of the hook bolt 14 inserted through the insertion hole 32.

  As shown in FIGS. 3 to 5, the fixing member 2 hooks the two hook portions 12 on the upper edge of the tilt portion 7 of the loading platform 6, and hooks the hook portion 23 of the hook bolt 14 on the hook portion 31 of the loading platform 6. In this state, the wing nut 15 screwed into the threaded portion 22 of the hook bolt 14 is tightened to be detachably fixed to the outside of the tilt portion 7. In addition, the structure of the fixing member 2 is not specifically limited, It can change suitably. Here, as shown in FIG. 4, if the insertion hole 32 of the protrusion 13 is a long hole extending in the vertical direction, there is an advantage that the mounting position of the hook bolt 14 can be adjusted in the vertical direction.

  As shown in FIGS. 3 and 4, the clamp 16 is provided at the center of the upper edge of the main body 11 on the other side 2 b of the fixing member 2. The elevating member 3 is detachably fixed to the other side 2b of the fixing member 2 by a clamp 16 so that the longitudinal direction is the vertical direction.

  As shown in FIGS. 1 to 5, the elevating member 3 includes a column 41 and a number of footrests 42. Therefore, the operator 43 as shown in FIG. 2 can easily lift and lower between the ground 6 and the load 44 loaded thereon using the lifting member 3. Examples of the load 44 include, but are not particularly limited to, waste wood generated in a dismantling work such as a detached house. As shown in FIG. 1, the elevating member 3 can be supported at a height of several centimeters to several tens of centimeters from the ground 45, but is not limited thereto, and the lower end thereof may be in contact with the ground 45. .

  The support column 41 is formed of a tubular steel pipe or the like, and is detachably fixed to the clamp 16 of the fixing member 2. The footrest portion 42 is formed of a circular tubular steel pipe or the like, and is provided on the left side and the right side of the support column 41 so as to protrude in a direction perpendicular to the longitudinal direction of the support column 41 while being spaced apart from each other in the vertical direction. Yes.

  The protruding position of the footrest portion 42 is not particularly limited, and may be alternated between the left side and the right side of the support column 41 as shown in FIG. It may be symmetric. Further, the footrest portion 42 may be detachable by a conventionally known appropriate technique so that it can be detached from the support post 41 as necessary. Furthermore, the position, the number, and the configuration of the clamps 16 are not particularly limited. For example, the two clamps 16 may be provided at appropriate positions on the other side 2b of the fixing member 2 with a space therebetween in the vertical direction. . Alternatively, a loose fitting portion for loosely fitting the column 41 of the elevating member 3, a fitting portion for fitting the column 41, or a fitting portion for fitting the lower end of the column 41 below the clamp 16 on the other side 2 b of the fixing member 2. May be provided.

  As shown in FIGS. 2 and 6, the roll-up lifeline 4 is detachably attached to, for example, a semi-ring-shaped locking portion 46 provided on the fixing member 2 side in the vicinity of the upper end of the support column 41. As shown in FIG. 6, the retractable lifeline 4 is obtained by winding a lifeline 51 made of a wire, a belt, or the like on a bobbin (not shown) that is rotatably provided in a cover 52. The bobbin is urged with a winding force in the direction of winding the lifeline 51 by the elastic force of a winding spring (not shown) provided in the cover 52. The bobbin is provided with a rotatable fall prevention claw (not shown). The tip 4a of the roll-up lifeline 4 (lifeline 51) is detachably locked to the operator 43 as shown in FIG.

  Here, when the worker 43 is about to fall down from the load 44 while performing the rearrangement work of the load 44 on the load 44 such as waste wood loaded on the loading platform 6. In this case, the lifeline 51 is suddenly pulled out from the cover 52, the bobbin is suddenly rotated, and the fall prevention claw is opened to the outside by the centrifugal force due to the rapid rotation. The opened fall prevention claw contacts a stopper (not shown) provided in the cover 52. Thereby, rotation of the bobbin is blocked and further extension of the lifeline 51 is blocked, so that the operator 43 can be prevented from falling.

  In addition, the position, the number, and the configuration of the locking portions 46 for attaching the retractable lifeline 4 are not particularly limited. For example, the plurality of locking portions 46 are placed at appropriate positions of the support columns 41 and the footrest portions 42. It is provided to be spaced apart from each other in the vertical direction, and the rollable lifeline 4 is sequentially replaced from the lower locking portion 46 to the upper locking portion 46 as the height of the load 44 increases. It may be. That is, the retractable lifeline 4 can be detachably attached to an appropriate position of the elevating member 3.

  According to the fall prevention tool 1 configured as described above, it can be detachably attached to the lift 7 of the loading platform 6 of the lorry 5 and modification of the lorry 5 is unnecessary, which may be illegal. In addition, there is an advantage that the cost can be reduced. Further, since the operator 43 can move up and down using the elevating member 3, there is an advantage that the operator 43 can be prevented from falling while being raised or lowered.

  As shown in FIG. 9, the fall prevention tool 61 according to the second embodiment is substantially the same as the fall prevention tool 1 of the first embodiment, but uses two fixing members 2 and replaces the lifting member 3. A ladder 62 is used.

  The fixing members 2 are fixed to each other in the same manner as in the first embodiment at intervals in the lateral direction on the outside of the tilt portion 7 of the loading platform 6 of the lorry 5.

  The ladder 62 has two support columns 71 and a large number of horizontal bars 72. Therefore, the worker 43 can easily move up and down between the ground on the loading platform 6 and the load 44 loaded thereon using the ladder 62.

  The support 71 is made of a tubular steel pipe or the like. The horizontal rail 72 is formed of a circular tubular steel pipe or the like, and is installed between two opposing struts 71 with a space therebetween in the vertical direction.

  The ladder 62 is detachably fixed to the other side 2b of the fixing member 2 by the clamps 16 of the two fixing members 2 so that the longitudinal direction is the vertical direction.

  Note that the number of the fixing members 2 is not limited to two, and any one column 71 of the ladder 62 may be fixed to the other side 2 b of one fixing member 2, and two clamps 16 may be attached. You may fix both the support | pillars 71 of the ladder 62 to the other side 2b of the one fixing member 2 provided mutually spaced apart in the horizontal direction.

  Although not shown in FIG. 9, the retractable lifeline 4 is detachably attached to an appropriate position of one of the columns 71 of the ladder 62 in the same manner as in the first embodiment. In this case as well, a plurality of locking portions 46 similar to those in the first embodiment are provided at appropriate positions on either one or both of the columns 71 and the horizontal rails 72 so as to be spaced apart from each other in the vertical direction. The roll-up lifeline 4 may be sequentially replaced from the lower locking portion 46 to the upper locking portion 46 as the height increases. Moreover, you may make it attach the detachable lifeline 4 to the crosspiece 72 directly and detachably. That is, the retractable lifeline 4 can be detachably attached to an appropriate position of the ladder 62.

  According to the fall prevention tool 61 configured as described above, it can be detachably attached to the lift part 7 of the loading platform 6 of the lorry 5 and modification of the lorry 5 is unnecessary, which may be illegal. In addition, there is an advantage that the cost can be reduced. Further, since the worker 43 can move up and down using the ladder 62, there is an advantage that the worker 43 can be prevented from falling while being lifted.

  As shown in FIGS. 10 and 11, the fall prevention fence 81 according to the third embodiment is provided on the left side and the front side of the loading platform 6 of the lorry 5 so that the plan view is L-shaped. In addition to the three fixing members 2 and the lifting member 3 similar to those of the first embodiment, two support members 82 and 83 and two handrails 84 and 85 are provided.

  The fixing member 2 is detachably fixed to the outer side of the front end and the rear end of the left side tilt portion 7 and the outer side of the front end of the right side tilt portion 8 in the same manner as in the first embodiment.

  The elevating member 3 is detachably fixed to the other side 2b of the fixing member 2 fixed to the front end of the left side tilting portion 7 so that the longitudinal direction is the vertical direction as in the first embodiment.

  The support members 82 and 83 are formed of a tubular steel pipe or the like, and are fixed to the other side 2b of the fixing member 2 fixed to the rear end of the left-side tilt portion 7 and to the front end of the right-side tilt portion 8. The other side 2b of the member 2 is detachably fixed in the same manner as the column 41 of the elevating member 3 so that the longitudinal direction is the vertical direction.

  As shown in FIGS. 12 and 13, an L-shaped handrail receiver 86 is disposed on the outside and the front side of the elevating member 3 in the vicinity of the upper end of the column 41 so as to protrude in a direction perpendicular to the longitudinal direction of the column 41. Are provided with a different height. The bottom surface of the handrail receiver 86 and the column 41 are connected by a reinforcing rib 87 having a right triangle shape. On the upper surface of the handrail receiver 86, a lateral slip prevention pin 88 is projected.

  As shown in FIGS. 10 and 11, a handrail receiver 86 similar to the above protrudes from the outside of the column member 82 positioned at the rear end of the left tilt portion 7. The handrail 84 is composed of a tubular steel pipe or the like, and is externally fitted to a lateral displacement prevention pin 88 of the handrail receiver 86 in the vicinity of one end and the other end in the longitudinal direction, as shown in FIGS. A pair of upper and lower through holes 89 are formed. A handrail 84 is installed on the handrail receiver 86 on the outer side of the elevating member 3 and the handrail receiver 86 on the outer side of the support member 82 by fitting a pair of upper and lower through holes 89 to the lateral displacement prevention pins 88 respectively.

  As shown in FIG. 11, a handrail receiver 86 similar to the above protrudes from the front side of the support member 83 located at the front end of the right-side tilt part 8. The handrail 85 is configured similarly to the handrail 84 described above. A handrail 85 is installed on the handrail receiver 86 on the front side of the elevating member 3 and the handrail receiver 86 on the front side of the support member 83 by fitting a pair of upper and lower through holes 89 to the lateral displacement prevention pins 88 respectively. Thus, if the pair of upper and lower through-holes 89 of the handrails 84 and 85 are externally fitted to the lateral displacement prevention pins 88 of the handrail receiver 86, there is an advantage that the lateral displacement of the handrails 84 and 85 can be prevented.

  As shown in FIGS. 10 and 14, the retractable lifeline 4 is detachably attached to, for example, a semi-ring-shaped locking portion 90 provided on the lower side of the center in the longitudinal direction of the handrail 84.

  The position, number, and configuration of the locking portion 90 are not particularly limited. In addition to the center in the longitudinal direction of the handrail 84 as shown in FIG. 10, the front and rear sides in the longitudinal direction of the handrail 84, the handrail 85, A locking portion 90 may be provided at an appropriate position of the elevating member 3 and the support members 82 and 83, and the roll-up lifeline 4 may be appropriately replaced according to the position of the operator 43. Further, a plurality of handrails 84 and 85 provided with a locking portion 90 are installed on the support 41 and the support members 82 and 83 or between the support members 82 and 83 at intervals in the vertical direction. The rollable lifeline 4 may be sequentially replaced from the lower locking portion 90 to the upper locking portion 90 as the height of the lifeline increases. That is, the retractable lifeline 4 can be detachably attached to an appropriate position of the elevating member 3, the support members 82 and 83, or the handrails 84 and 85.

  Furthermore, in the fall prevention fence 81, the positions of the elevating member 3 and the column member 82 may be interchanged, and the positions of the elevating member 3 and the column member 83 may be interchanged. In addition, instead of the elevating member 3, a ladder 62 in the fall prevention tool 61 of the second embodiment may be used. Further, the fall-preventing fence 81 having an L shape in plan view includes the left and front sides of the loading platform 6 of the lorry 5, the front and right sides of the loading platform 6, the right and rear sides of the loading platform 6, or the rear side of the loading platform 6 and It may be provided on the left side. Furthermore, it is provided with two fixing members 2, an elevating member 3 or a ladder 62, a support member 82 (83), and at least one handrail 84 (85), and the left side, the right side, the front side, or the rear side of the loading platform 6, or the loading platform 6. A plan view arranged on any two of the left side, right side, front side, and rear side may be an I-shaped fall-preventing fence, or may include four fixing members 2, lifting members 3 or ladders 62, three A support member 82 (83) and at least three handrails 84 (85) and the left side, front side and right side of the cargo bed 6, or the front side, right side and rear side of the cargo bed 6, or the right side and rear side of the cargo bed 6. Moreover, the plan view arranged on the left side or the rear side, the left side, and the front side of the cargo bed 6 may be a U-shaped fall prevention fence.

  According to the fall-preventing fence 81 configured as described above, it can be detachably attached to the lift parts 7 and 8 of the loading platform 6 of the lorry 5 and modification of the lorry 5 is not required. There is an advantage that the cost can be reduced. Further, since the operator 43 can move up and down using the elevating member 3 or the ladder 62, there is an advantage that the operator 43 can be prevented from falling while being raised or lowered. Further, since the handrails 84 and 85 are installed, there is an advantage that the operator 43 can be prevented from falling by the handrails 84 and 85.

  As described above, the fall prevention tool and its method of use according to the present invention, as well as the fall prevention fence and its method of use, make it unnecessary to modify the truck, thereby preventing illegal acts and reducing costs. In addition, it is suitable for preventing the operator from falling while moving up and down.

The front view which shows the use condition of the fall prevention tool which concerns on 1st Embodiment. AA sectional view taken on the line AA of FIG. The principal part expanded sectional view of the fixing member vicinity. The principal part enlarged front view of the fixing member vicinity seen from the left side of the lorry. BB sectional drawing of FIG. The principal part enlarged side view of the vicinity of a winding-type lifeline seen from the rear side of the lorry. The front view of a hook bolt. The top view of a hook bolt. The front view which shows the use condition of the fall prevention tool which concerns on 2nd Embodiment. The front view which shows the use condition of the fall prevention fence which concerns on 3rd Embodiment. The principal part enlarged plan view near the loading platform of a truck. The principal part enlarged front view of the handrail receiver vicinity of the support | pillar of the raising / lowering member seen from the left side of the lorry. The CC sectional view taken on the line of FIG. The principal part enlarged front view near the winding-type lifeline seen from the left side of the lorry.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fall prevention tool 2 Fixing member 2a One side 2b The other side 3 Elevating member 4 Rewind-type lifeline 4a Tip part 5 Lorry vehicle 6 Carriage platform 7, 8, 9 Lifting part 41 Strut 42 Footrest part 61 Fall prevention tool 62 Ladder 71 Strut 72 Horizontal rail 81 Fall prevention fence 82, 83 Prop member 84, 85 Handrail

Claims (6)

A fixing member, one side of which is detachably fixed to the outside of the lift part of the loading platform of the lorry,
A column that is detachably fixed to the other side of the fixing member so that the longitudinal direction is the vertical direction, and the left and right sides of the column are spaced apart from each other in the vertical direction and perpendicular to the longitudinal direction of the column. An elevating member having a number of legrests protruding so as to be in a direction;
Rewindable lifeline attached detachably to this lifting member,
Equipped with a,
The fixing member is
A main body composed of a rectangular flat plate;
A hook portion having an L-shaped cross section provided so as to protrude in a direction perpendicular to the left end and the right end of the upper edge of the main body portion;
Two protrusions provided with an insertion hole, which is a long hole extending vertically, provided so as to protrude downward from the left end and the right end of the lower edge of the main body part,
A screw portion that protrudes in a direction parallel to the longitudinal direction of the tip of the base portion made of a trapezoidal plate and is inserted into the insertion hole of the protrusion, and a head opposite to the tip portion of the base A hook bolt including a hook portion projecting perpendicular to the surface direction;
A wing nut screwed into a threaded portion protruding from the insertion hole of the protruding portion of the hook bolt;
A clamp for detachably fixing the column of the elevating member provided on the other side of the center of the upper edge of the main body,
A fall prevention device comprising: Two fixing members in which one side on the outside of the bed of tilt of the truck is detachably fixed,
There are two opposing struts and a large number of horizontal rails installed between the two struts in the vertical direction so as to be spaced apart from each other, and the longitudinal direction is the vertical direction on the other side of each of the fixing members. A ladder on which one support column is detachably fixed;
Retractable lifeline attached to this ladder detachably,
Equipped with a,
The fixing member is
A main body composed of a rectangular flat plate;
A hook portion having an L-shaped cross-section provided so as to protrude from the left end and the right end of the upper edge of the main body portion in a right angle direction;
Two protrusions provided with an insertion hole, which is a long hole extending vertically, provided so as to protrude downward from the left end and the right end of the lower edge of the main body part,
A screw portion that protrudes in a direction parallel to the longitudinal direction of the tip of the base portion made of a trapezoidal plate and is inserted into the insertion hole of the protrusion, and a head opposite to the tip portion of the base A hook bolt including a hook portion projecting perpendicular to the surface direction;
A wing nut screwed into a threaded portion protruding from the insertion hole of the protruding portion of the hook bolt;
A clamp that removably fixes the ladder column provided on the other side of the center of the upper edge of the main body,
A fall prevention device comprising: A method of using the fall prevention tool according to claim 1 or 2 for preventing an operator from falling from a load loaded on a loading platform of the truck.
In a state in which one side of the fixing member is detachably fixed to the outside of the tilt portion of the loading platform, and the column is detachably fixed to the other side of the fixing member so that the longitudinal direction thereof is the vertical direction, A method of using a fall prevention tool, wherein the tip of the roll-up lifeline is detachably locked to an operator on the load. Two fixing members, one of which is detachably fixed to the outside of the pallet of the cargo truck,
One of the fixed other end in the longitudinal direction is the vertical direction so as to detachably fixed strut members, and the longitudinal direction of the struts open the respective intervals to each other in the vertical direction on the left and right sides of the strut An elevating member having a number of leg rests projecting so as to be perpendicular to the direction;
A strut member which longitudinal direction is detachably fixed so as to be vertically on the other side of the other of said fixed member,
At least one handrail constructed on at least the support column and the support member;
Retractable lifeline attached to the lifting member, the support member, or the handrail in a detachable manner,
Equipped with a,
The fixing member is
A main body made of a rectangular flat plate;
A hook portion having an L-shaped cross section provided so as to protrude in a direction perpendicular to the left end and the right end of the upper edge of the main body portion;
Two protrusions provided with an insertion hole which is a long hole extending vertically while being provided to protrude downward from the left end and the right end of the lower edge of the main body part,
A screw portion that protrudes in a direction parallel to the longitudinal direction of the tip of the base portion made of a trapezoidal plate and is inserted into the insertion hole of the protrusion, and a head opposite to the tip portion of the base A hook bolt including a hook portion projecting perpendicular to the surface direction;
A wing nut screwed into a threaded portion protruding from the insertion hole of the protruding portion of the hook bolt;
The column of the lifting member provided on the other side of the center of the upper edge of the main body and the clamp for removably fixing the column member;
The fall prevention fence characterized by comprising . Three fixing members, one of which is detachably fixed to the outside of the pallet of the cargo truck,
There are two opposite struts and a number of horizontal rails installed between the two struts in the vertical direction so as to be spaced apart from each other, and the longitudinal direction is the vertical direction on the other side of each of the two fixing members. A ladder with one detachable fixed so that,
A strut member which longitudinal direction is detachably fixed so as to be vertically on the other side of the other of said fixed member,
At least one handrail constructed on at least the support column and the support member;
Retractable lifeline detachably attached to the ladder, the strut member, or the handrail,
Equipped with a,
The fixing member is
A main body composed of a rectangular flat plate;
A hook portion having an L-shaped cross-section provided so as to protrude from the left end and the right end of the upper edge of the main body portion in a right angle direction;
Two protrusions provided with an insertion hole, which is a long hole extending vertically, provided so as to protrude downward from the left end and the right end of the lower edge of the main body part,
A screw portion that protrudes in a direction parallel to the longitudinal direction of the tip of the base portion made of a trapezoidal plate and is inserted into the insertion hole of the protrusion, and a head opposite to the tip portion of the base A hook bolt including a hook portion projecting perpendicular to the surface direction;
A wing nut screwed into a threaded portion protruding from the insertion hole of the protruding portion of the hook bolt;
A clamp for detachably fixing the ladder column and the column member provided on the other side of the center of the upper edge of the main body,
A fall prevention fence characterized by comprising: A method for using the fall prevention fence according to claim 4 or 5 to prevent an operator from falling from a load loaded on a loading platform of the truck.
A side of the fixing member is detachably fixed to the outer side of the lift part of the loading platform, and the column is detachably fixed to the other side of one of the fixing members so that the longitudinal direction thereof is in the vertical direction; and With the column member detachably fixed to the other side of the other fixing member so that the longitudinal direction thereof is the vertical direction, the tip of the retractable lifeline is detachable to an operator on the load How to use the fall prevention fence characterized by locking.

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